docs: fix changelog [skip ci]

Author: mnightingale

CHANGELOG.md

@@ -3,7 +3,6 @@
 
 ### Features
 
-* allow headers ([5cc89af](https://github.com/mnightingale/react-native-image-cache-hoc/commit/5cc89afb29653219cabbdb9dee40588e03afbaec))
 * allow headers to be set ([00b90e5](https://github.com/mnightingale/react-native-image-cache-hoc/commit/00b90e5af62fc0ef07a7728de74eb467def96dd5))
 
 ## [3.3.1](https://github.com/mnightingale/react-native-image-cache-hoc/compare/v3.3.0...v3.3.1) (2021-08-03)